Code coverage tests

This page documents the degree to which the PARI/GP source code is tested by our public test suite, distributed with the source distribution in directory src/test/. This is measured by the gcov utility; we then process gcov output using the lcov frond-end.

We test a few variants depending on Configure flags on the pari.math.u-bordeaux.fr machine (x86_64 architecture), and agregate them in the final report:

• with GMP kernel
• with GMP kernel using --mt=pthread
• with native kernel, including micro-assembler code
• with native kernel, without micro-assembler
• with native kernel, without micro-assembler, disabling GCC extensions (DISABLE_INLINE)
• with GMP kernel, emulating an x86_32 architecture at Configure time via setarch

The target is to exceed 90% coverage for all mathematical modules (given that branches depending on DEBUGLEVEL or DEBUGMEM are not covered). This script is run to produce the results below.

LCOV - code coverage report

Current view: top level - basemath - rootpol.c (source / functions) Hit Total Coverage Test: PARI/GP v2.18.1 lcov report (development 30703-cd958ce78c) Lines: 1467 1530 95.9 % Date: 2026-02-23 09:22:43 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
_intervalcmp	0
_mp_sub	0
scalepol2n	0
ZX_Uspensky_equal_yes	14
polgraeffe	14
ZX_Uspensky_no	21
ZX_Uspensky_equal	28
rootsdeg0	42
FFT	56
FFTinv	56
polmod_to_embed	84
FFT_i	98
sol_ok	3378
ZX_graeffe	5390
ZX_sturm	6395
fft2	7462
roots	8018
ZX_deg1root	15204
_sqrtnr	22597
polrootsbound_i	27123
polrootsbound	27130
RgX_normalize1	35731
ZX_realroots_irred	48567
realroots	50627
ZX_sturm_irred	116583
ZX_sturm_i	122978
split_pols	166687
polsolve	166689
splitcauchy	166695
solve_exact_pol	231145
cleanroots	231763
isexactpol	239753
roots_com	239753
roots_aux	239781
checkvalidpol	266890
QX_complex_roots	296188
_gen_zero	326029
fix_roots1	398365
conformal_mapping	467826
split_1	467828
split_0_1	468185
split_0_2	468187
logradius	493879
parameters	493880
split_2	493881
update_radius	493881
optimize_split	493883
split_fromU	493883
split_0	494245
dft	502268
refine_F	502270
all_roots	535896
clean_roots	535936
a_posteriori_errors	536994
fix_roots	536996
mygprec_special	537000
logmodulus	606604
logpre_modulus	606605
abs_update_r	778592
ind_maxlog2	902521
isexactscalar	931714
isreal	961710
initdft	996148
dual_modulus	1012285
usp	1125868
ZX_sturmpart	1128189
check_ab	1178816
tocomplex	1213261
isvalidcoeff	1228143
ZX_Uspensky	1313689
conformal_basecase	1403594
conformal_pol	1403717
fujiwara_bound_real	1406670
split_complete	1525483
homothetie	1609763
append_clone	1613599
logmin_modulus	1614462
root_error	1911706
mygprecrc_special	2178381
ZX_rescale2prim	2233500
cmp_complex_appr	2237403
fujiwara_bound	2271121
checkbound	2354762
refine_H	2460184
scalepol	4288523
mygprec_absolute	4337753
_mp_mul	4374634
logmax_modulus	4449883
bkeval_single_power	5235453
splitpoleval	5235969
newton_polygon	5505769
X2XP1	5989680
_mp_sqr	6298197
dblexp	6547839
quicktofp	6977115
RgX_gtofp_bit	7029731
abs_update	8004754
mydbllogr	9545752
homothetie2n	9955359
_gen_nored	11206195
eval_rel_pol	13135711
fft	14157066
_gen_one	14472962
ZX_to_ZiX	16452156
pol_to_gaussint	17585547
_mp_add	24663994
_mp_cmul	34773989
myshiftrc	35498566
homothetie_gauss	36489558
lower_bound	40948054
findpower	40948354
graeffe	49501924
mydbllog2r	56173999
mygprec	63747886
ZiX_sqr	99017100
myshiftic	135833687
mygprecrc	215150144
mydbllog2i	226409178
dbllog2	302105122

Generated by: LCOV version 1.16