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 30561-4f4869c0e7) Lines: 1467 1530 95.9 % Date: 2025-11-28 09:21:39 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296413
RgX_gtofp_bit	7031612
RgX_normalize1	35901
X2XP1	5990176
ZX_Uspensky	1313883
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15274
ZX_graeffe	5390
ZX_realroots_irred	48651
ZX_rescale2prim	2233693
ZX_sturm	6395
ZX_sturm_i	123171
ZX_sturm_irred	116776
ZX_sturmpart	1128236
ZX_to_ZiX	16458546
ZiX_sqr	99025468
_gen_nored	11202918
_gen_one	14473573
_gen_zero	326149
_intervalcmp	0
_mp_add	24663463
_mp_cmul	34769096
_mp_mul	4374509
_mp_sqr	6298300
_mp_sub	0
_sqrtnr	22709
a_posteriori_errors	537226
abs_update	8005508
abs_update_r	778653
all_roots	536122
append_clone	1614180
bkeval_single_power	5235700
check_ab	1178863
checkbound	2354856
checkvalidpol	267060
clean_roots	536167
cleanroots	231763
cmp_complex_appr	2238515
conformal_basecase	1403882
conformal_mapping	467922
conformal_pol	1404003
dblexp	6549023
dbllog2	302086121
dft	502365
dual_modulus	1012463
eval_rel_pol	13138260
fft	14159770
fft2	7462
findpower	40954174
fix_roots	537224
fix_roots1	398469
fujiwara_bound	2271780
fujiwara_bound_real	1406914
graeffe	49506659
homothetie	1610095
homothetie2n	9957722
homothetie_gauss	36497718
ind_maxlog2	902656
initdft	996339
isexactpol	239753
isexactscalar	931714
isreal	961899
isvalidcoeff	1230235
logmax_modulus	4450883
logmin_modulus	1614790
logmodulus	606760
logpre_modulus	606758
logradius	493972
lower_bound	40953380
mydbllog2i	226414021
mydbllog2r	56183006
mydbllogr	9547094
mygprec	63756293
mygprec_absolute	4339958
mygprec_special	537231
mygprecrc	215196817
mygprecrc_special	2179187
myshiftic	135809451
myshiftrc	35506281
newton_polygon	5507229
optimize_split	493977
parameters	493974
pol_to_gaussint	17589054
polgraeffe	14
polmod_to_embed	84
polrootsbound	27300
polrootsbound_i	27293
polsolve	166725
quicktofp	6979044
realroots	50627
refine_F	502359
refine_H	2460487
root_error	1912576
roots	8018
roots_aux	239781
roots_com	239753
rootsdeg0	42
scalepol	4289370
scalepol2n	0
sol_ok	3378
solve_exact_pol	231145
split_0	494333
split_0_1	468284
split_0_2	468285
split_1	467922
split_2	493972
split_complete	1525892
split_fromU	493977
split_pols	166726
splitcauchy	166731
splitpoleval	5235870
tocomplex	1213951
update_radius	493972
usp	1126031

Generated by: LCOV version 1.16