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 30603-c72b2decfc) Lines: 1467 1530 95.9 % Date: 2026-01-07 09:21:48 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296157
RgX_gtofp_bit	7028907
RgX_normalize1	35733
X2XP1	5990017
ZX_Uspensky	1313783
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15202
ZX_graeffe	5390
ZX_realroots_irred	48563
ZX_rescale2prim	2233597
ZX_sturm	6395
ZX_sturm_i	122965
ZX_sturm_irred	116568
ZX_sturmpart	1128289
ZX_to_ZiX	16450667
ZiX_sqr	99005197
_gen_nored	11198017
_gen_one	14470207
_gen_zero	326014
_intervalcmp	0
_mp_add	24661277
_mp_cmul	34758546
_mp_mul	4374476
_mp_sqr	6298110
_mp_sub	0
_sqrtnr	22593
a_posteriori_errors	536969
abs_update	8003867
abs_update_r	778508
all_roots	535872
append_clone	1613491
bkeval_single_power	5234634
check_ab	1178916
checkbound	2354962
checkvalidpol	266892
clean_roots	535917
cleanroots	231763
cmp_complex_appr	2237149
conformal_basecase	1403463
conformal_mapping	467783
conformal_pol	1403585
dblexp	6547196
dbllog2	302018515
dft	502224
dual_modulus	1012182
eval_rel_pol	13134189
fft	14155078
fft2	7462
findpower	40942649
fix_roots	536975
fix_roots1	398348
fujiwara_bound	2271065
fujiwara_bound_real	1406770
graeffe	49494679
homothetie	1609609
homothetie2n	9954276
homothetie_gauss	36486584
ind_maxlog2	902428
initdft	996057
isexactpol	239753
isexactscalar	931714
isreal	961620
isvalidcoeff	1228149
logmax_modulus	4449466
logmin_modulus	1614313
logmodulus	606537
logpre_modulus	606540
logradius	493830
lower_bound	40942689
mydbllog2i	226355468
mydbllog2r	56169915
mydbllogr	9544690
mygprec	63739964
mygprec_absolute	4337353
mygprec_special	536982
mygprecrc	215124696
mygprecrc_special	2178249
myshiftic	135794515
myshiftrc	35494552
newton_polygon	5505138
optimize_split	493836
parameters	493833
pol_to_gaussint	17583583
polgraeffe	14
polmod_to_embed	84
polrootsbound	27132
polrootsbound_i	27125
polsolve	166696
quicktofp	6976769
realroots	50627
refine_F	502215
refine_H	2459899
root_error	1911567
roots	8018
roots_aux	239781
roots_com	239753
rootsdeg0	42
scalepol	4288119
scalepol2n	0
sol_ok	3378
solve_exact_pol	231145
split_0	494198
split_0_1	468145
split_0_2	468145
split_1	467784
split_2	493834
split_complete	1525370
split_fromU	493836
split_pols	166689
splitcauchy	166699
splitpoleval	5235100
tocomplex	1213135
update_radius	493833
usp	1125969

Generated by: LCOV version 1.16