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 30861-40e9da58f9) Lines: 1467 1530 95.9 % Date: 2026-05-04 09:27:01 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	5439
ZX_sturm	6395
fft2	7462
roots	8382
ZX_deg1root	15273
_sqrtnr	22667
polrootsbound_i	27230
polrootsbound	27237
RgX_normalize1	35838
ZX_realroots_irred	48651
realroots	50627
ZX_sturm_irred	116713
ZX_sturm_i	123108
split_pols	166735
polsolve	166741
splitcauchy	166749
solve_exact_pol	231509
cleanroots	231763
isexactpol	240117
roots_com	240117
roots_aux	240145
checkvalidpol	267361
QX_complex_roots	296332
_gen_zero	326021
fix_roots1	398828
conformal_mapping	468819
split_1	468820
split_0_1	469189
split_0_2	469190
split_2	494966
parameters	494971
update_radius	494971
logradius	494972
optimize_split	494972
split_fromU	494972
split_0	495337
refine_F	503367
dft	503371
all_roots	536403
clean_roots	536454
a_posteriori_errors	537508
fix_roots	537514
mygprec_special	537517
logpre_modulus	608287
logmodulus	608289
abs_update_r	780220
ind_maxlog2	904424
isexactscalar	934122
isreal	963792
initdft	998342
dual_modulus	1014574
usp	1126141
ZX_sturmpart	1128275
check_ab	1178902
tocomplex	1216032
isvalidcoeff	1231117
ZX_Uspensky	1313903
conformal_basecase	1406578
conformal_pol	1406698
fujiwara_bound_real	1407009
split_complete	1528186
homothetie	1613724
append_clone	1616311
logmin_modulus	1617798
root_error	1914578
mygprecrc_special	2181607
ZX_rescale2prim	2233869
cmp_complex_appr	2241717
fujiwara_bound	2274167
checkbound	2354932
refine_H	2464753
scalepol	4297738
mygprec_absolute	4344587
_mp_mul	4375575
logmax_modulus	4459012
splitpoleval	5236256
bkeval_single_power	5236544
newton_polygon	5521427
X2XP1	5990774
_mp_sqr	6299654
dblexp	6563165
quicktofp	6988095
RgX_gtofp_bit	7048922
abs_update	8021435
mydbllogr	9566202
homothetie2n	9980001
_gen_nored	11202041
eval_rel_pol	13169885
fft	14196339
_gen_one	14475753
ZX_to_ZiX	16492306
pol_to_gaussint	17628847
_mp_add	24663807
_mp_cmul	34767314
myshiftrc	35580295
homothetie_gauss	36565402
lower_bound	41032919
findpower	41033470
graeffe	49605176
mydbllog2r	57630714
mygprec	63867068
ZiX_sqr	99236494
myshiftic	136079670
mygprecrc	215580025
mydbllog2i	226780802
dbllog2	303930934

Generated by: LCOV version 1.16